3dom stands for 3-Dimensional Object Modeler. The aim of 3dom is to offer a tool to model reality with user-chosen accuracy, and user-chosen inclination for a particular purpose, which can be gradually improved and extended. 3dom is designed to be a general-purpose modeler, however it is especially inclined to model scenes for Global Illumination purposes.

AC3D is a well established, fully featured 3D modeling package. It features an easy to use interface, powerful polygon and vertex editing, a UV mapper, 2D/3D text, and subdivision surfaces. It supports many 3D file formats.

BRL-CAD is a powerful constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, and image and signal-processing tools.

Coin is an implementation of Open Inventor. Open Inventor is the de facto standard API for retained-mode 3D graphics programming. Open Inventor has a highly extensible design, and has been designed to allow for rapid development of highly interactive 3D graphics applications in the fields of CAD, engineering, scientific computing, simulation, VRML, and visualization.

The Free Animation and Modeling Project (or FAMP), is a project to create a full-featured 3-Dimensional Modeling and Animation System. FAMP shall include support for animation, animated modeling. FAMP already includes the ability to extend easily without modifying code thanks to a plug-in architecture.

Geomview is an interactive program for creating,
viewing, and manipulating 3D and
higher-dimensional geometric objects. Geomview can
be used as a standalone viewer for static objects
or as a display engine for other programs which
produce dynamically-changing geometry.

GooseEgg is a 3d modeler, skeletal animator, and level editor. You can edit the meshes of supported models and make models from sratch. You can even add skeletal structure to framed animation models, and produce framed models from skeletal models.

GtkGLMaterialDialogis a GTK+ dialog that can be used to edit 3D-object material properties. It is based on the material properties of OpenGL with diffuse, ambient, specular, emissive colors (RGBA), and a specular coefficient (shininess). The material is previewed by rendering a lit OpenGL sphere in a gtkglarea widget.